[kem-uh-loo-muh-nes-uh ns] /ˌkɛm əˌlu məˈnɛs əns/
(in chemical reactions) the emission of light by an atom or molecule that is in an excited state.
the phenomenon in which a chemical reaction leads to the emission of light without incandescence
The emission of light by a substance as a result of undergoing a chemical reaction that does not involve an increase in its temperature. Chemiluminescence usually occurs when a highly oxidized molecule, such as a peroxide, reacts with another molecule. The bond between the two oxygen atoms in a peroxide is relatively weak, and when it breaks the atoms must reorganize themselves, releasing energy in the form of light. Compare bioluminescence.
[shuh-man duh fair; French shuh-manduh fer] /ʃəˈmæn də ˈfɛər; French ʃə mɛ̃də ˈfɛr/ noun, Cards. 1. a variation of baccarat. /ʃəˈmæn də ˈfɛə; French ʃəmɛ̃dfɛr/ noun 1. a gambling game, a variation of baccarat
/ˌkɛmɪɒzˈməʊsɪs/ noun 1. (biochem) the mechanism by which the synthesis and utilization of the biochemical energy source ATP is regulated: the energy generated by oxidative phosphorylation generates a proton gradient across the membrane of the mitochondrion that drives the enzymic resynthesis of ATP 2. a chemical reaction between two compounds after osmosis through an intervening […]
[shuh-meez] /ʃəˈmiz/ noun 1. a woman’s loose-fitting, shirtlike undergarment. 2. (in women’s fashions) a dress designed to hang straight from the shoulders and fit loosely at the waist, sometimes more tightly at the hip. 3. a revetment for an earth embankment. /ʃəˈmiːz/ noun 1. an unwaisted loose-fitting dress hanging straight from the shoulders 2. a […]
[shem-uh-zet] /ˌʃɛm əˈzɛt/ noun 1. a woman’s garment of linen, lace, or the like, worn, toward the end of the Victorian era, over a low-cut or open bodice to cover the neck and breast. /ˌʃɛmɪˈzɛt/ noun 1. an underbodice of lawn, lace, etc, worn to fill in a low-cut dress